Calculator



FIG. 1 is a bottom front perspective view of a calculator;

FIG. 2 is a front elevation view of the calculator of FIG. 1;

FIG. 3 is a right side elevation view of the calculator of FIG. 1;

FIG. 4 is a top plan view of the calculator of FIG. 1;

FIG. 5 is a bottom plan view of the calculator of FIG. 1;

FIG. 6 is a back elevation view of the calculator of FIG. 1; and,

FIG. 7 is a bottom front perspective view of the calculator of FIG. 1, shown in an alternate position of use. 

The ornamental design for a calculator, as shown and described. 